Hyundai Ioniq (AE): Hybrid Motor Control System / Motor Control Unit(MCU). Repair procedures

Removal
   
MCU is integrated with HPCU. Therefore, to install / remove the MCU, follow the procedure for installing / removing the HPCU.
(Refer to Hybrid Control System - "HPCU (Hybrid Power Control Unit)".)
You need to perform resolver compensation whenever the engine, HPCU, drive motor, or starter generator (HSG) is replaced, removed, or reinstalled.
Perform compensation according to the GDS motor / HSG resolver compensation procedure shown below.
GDS Motor/HSG Resolver Compensation Procedure

    Diagram System CircuitA high-capacity power module is applied to the two high-voltage motors.The power module consists of a high - speed switching circuit that is isolated from the IGBT and DIODE circuits.

    Description• To efficiently control the drive motor, you need to know the absolute location of a motor rotor (permanent magnet).• Resolver detects the absolute location of the motor rotor.

    Other information:

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Photo Sensor. Repair procedures

    Inspection1.Turn the ignition switch ON.2.Connect the GDS.3.Emit intensive light toward the photo sensor using a lamp, and check the output voltage change.4.The voltage will rise with higher intensive light and reduce with lower intensive light.1. Auto light signal2.

    Hyundai Ioniq (AE) 2017-2022 Service & Repair Manual: Troubleshooting

    Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2 Trouble symptom Probable cause Remedy The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed se

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